Re: st: get current time with milliseconds?

[iip <iip.umar.rifai@gmail.com>]

Ahaa...!

Thanks Matt! profiller is what I need.

Best,

-iip-

On Tue, Jul 23, 2013 at 9:42 PM, Matthew White
<mwhite@poverty-action.org> wrote:
> Hi Iip,
>
> For that use, check out -timer- and -profiler-.
>
> Best,
> Matt
>
> On Mon, Jul 22, 2013 at 11:55 PM, iip <iip.umar.rifai@gmail.com> wrote:
>> Hi Sergiy,
>>
>> Thanks a lot, very informatif.
>>
>> I'm going to test time performance of code repeat the code multiple
>> times, so based on your info, on Stata I'm only able to do it in
>> seconds right?
>>
>> Best,
>>
>> -iip-
>>
>> On Tue, Jul 23, 2013 at 10:35 AM, Sergiy Radyakin
>> <serjradyakin@gmail.com> wrote:
>>> Hi Iip,
>>>
>>> First, you may want to elaborate on your particular problem you are
>>> solving. Be careful because as we know: " The OS Components may
>>> contain support for programs written in Java. Java technology is not
>>> fault tolerant and is not designed, manufactured, or intended for use
>>> or resale as on-line control equipment in hazardous environments
>>> requiring fail-safe performance, such as in the operation of nuclear
>>> facilities, aircraft navigation or communication systems, air traffic
>>> control, direct life support machines, or weapons systems, in which
>>> the failure of Java technology could lead directly to death, personal
>>> injury, or severe physical or environmental damage. " (
>>> http://technet.microsoft.com/en-us/library/cc976720.aspx )
>>>
>>> Second, read the following article:
>>> http://msdn.microsoft.com/en-us/magazine/cc163996.aspx
>>>
>>> Now given that Stata is cross-platform, and that "timestamps ... from
>>> Windows NT are limited to a maximum resolution of 10 or 15
>>> milliseconds, depending on the underlying hardware" you will have a
>>> decent problem to have such a precise measurement. And by that I mean
>>> "current time to milliseconds", I don't mean just any time close to
>>> current, with some milliseconds attached to it. Note that neither
>>> Windows XP, nor Windows Server 2003, nor earlier versions of Windows
>>> can't use HPET (if you count on it).
>>>
>>> In any case here is what you may want to explore, and more suggestions
>>> will probably come from others:
>>> 1) to time performance of code repeat the code multiple times, then
>>> you need to measure seconds;
>>> 2) to get the world time consult an online service, many are linked to
>>> atomic clocks worldwide; transmission delay is usually a fraction of a
>>> second (about 0.2 here) and it takes several seconds to synchronize;
>>> 3) to get really precise time measurement you may want to attach a GPS
>>> dongle and read time from there. that might give you up to a 40ns
>>> resolution, not sure how fast your program will be able to digest it;
>>> 4) to get random numbers use truernd or other similar approaches.
>>>
>>> Finally, Stata advertizes: "High-frequency data with millisecond
>>> resolution" here: http://www.stata.com/features/time-series/
>>> But I always assumed that the above refers to the ability to
>>> manipulate data stored with such precise timestamps, not to generate
>>> and timestamp it with such high frequency.
>>>
>>>
>>> Best, Sergiy Radyakin
>>>
>>> On Mon, Jul 22, 2013 at 9:10 PM, iip <iip.umar.rifai@gmail.com> wrote:
>>>> On Thu, Jul 18, 2013 at 12:29 PM, iip <iip.umar.rifai@gmail.com> wrote:
>>>>> Hi All,
>>>>>
>>>>> I'm trying to get current time with milliseconds, using
>>>>> c(current_time) only get seconds, how to get time including a
>>>>> milliseconds?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> -iip-
>>>> *
>>>> *   For searches and help try:
>>>> *   http://www.stata.com/help.cgi?search
>>>> *   http://www.stata.com/support/faqs/resources/statalist-faq/
>>>> *   http://www.ats.ucla.edu/stat/stata/
>>> *
>>> *   For searches and help try:
>>> *   http://www.stata.com/help.cgi?search
>>> *   http://www.stata.com/support/faqs/resources/statalist-faq/
>>> *   http://www.ats.ucla.edu/stat/stata/
>> *
>> *   For searches and help try:
>> *   http://www.stata.com/help.cgi?search
>> *   http://www.stata.com/support/faqs/resources/statalist-faq/
>> *   http://www.ats.ucla.edu/stat/stata/
>
>
>
> --
> Matthew White
> Senior Project Associate
> Innovations for Poverty Action
> 101 Whitney Avenue, New Haven, CT 06510 USA
> www.poverty-action.org
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/faqs/resources/statalist-faq/
> *   http://www.ats.ucla.edu/stat/stata/
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/